The New Puzzle Classics: Ingenious Twists on Timeless Favorites (Mensa)
by Mensa, Serhiy Grabarchuk
ISBN 13: 9781402717420
Format: Paperback (352 pages) Publisher: Sterling Published: 13 Jul 2005
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The Simple Book of Not-so-simple Puzzles
by Serhiy Grabarchuk,Peter Grabarchuk,Serhiy Grabarchuk Jr.
ISBN 13: 9781568814186
Format: Paperback (119 pages) Publisher: A K Peters/CRC Press Published: 11 Feb 2008